JPH1081320A - Label sticking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label sticking device which can correctly stick a label even on a soft an easily-collapsing matter to be stuck without damaging it, with which the cost can be reduced and work efficiency can be raised. SOLUTION: A slip clutch 50 is arranged between a drive pulley 38 and a motor shaft 32. Thus, a suction plate 5 comes into contact with a matter to be stuck 3 halfway through its descent until a lower limit position so as to press the matter to be stuck 3. When the pressing force becomes above a predetermined pressing force, that is, rotation of a motor 30 becomes above a predetermined torque, the slip clutch 50 slips and the motor shaft 32 idles. A predetermined pressing force (slip torque) with which the slip clutch 50 slips is previously adjusted by a user himself and the degree of the idling of the motor shaft 32 is changed, where the load torque is preferably controlled within a range of 0.1-2.5kgf/cm. Also, in this case, by making the predetermined pressing force where the slip clutch 50 slips variable, delicate measures can be taken corresponding to the degree of softness of the matter to be stuck 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label sticking apparatus, and more particularly, to a label sticking apparatus for sticking a label by bringing a suction plate holding a label into contact with an object to be stuck.

[0002]

2. Description of the Related Art A label sticking apparatus which sticks a label to an object to be adhered by pressing a suction plate holding a label peeled off from a backing sheet through the label to the object to be adhered is applied by a pressing force. It is necessary to appropriately control the pressing force of the suction plate against the adherend so that the kimono is not damaged.

[0003] As shown in FIG. 3, in the conventional label suction device, a detection sensor 4 for confirming that the label 2 has been stuck to the object 3 is provided above the suction plate 5. The pressing force against the adherend 3 is controlled by retreating the suction plate 5 simultaneously with the input of the ON signal, or by holding the suction plate 5 with a plurality of springs 6 and changing the compression force of the springs 6. Was.

[0004]

However, in the conventional label sticking apparatus 1, when the hardness of the sticking surface of the object 3 changes, the spring pressure must be adjusted each time. The adjustment is very difficult, and the work time is often several tens of minutes, so that there is a disadvantage that the work efficiency is reduced.

On the other hand, if the spring 6 is too weak, the suction plate 5 will fluctuate at the upper end of the suction plate 5 where the label 2 is suctioned. However, there are disadvantages that the adsorption position of the label 2 is shifted or stable adsorption of the label 2 cannot be expected. Furthermore, since components such as the spring 6 are required, there is a disadvantage that the cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and allows a label to be accurately adhered to an object to be adhered having a soft and easily crushable property without damaging it. It is an object of the present invention to provide a label sticking device capable of reducing costs and increasing work efficiency.

[0007]

According to the present invention, in order to attain the above object, a suction plate on which a label is sucked is advanced with respect to an object to be stuck by an advance / retreat mechanism, and the suction plate is stuck through the label. In a label sticking apparatus that presses on a kimono and sticks the label on the adherend, a slip clutch is provided on a power transmission unit of the advance / retreat mechanism, and a press that presses the suction plate against the adherend. When the pressure reaches a predetermined pressing force, the slip clutch slips.

According to the present invention, a slip clutch is provided in the power transmission section of the reciprocating mechanism for moving the suction plate toward and from the adherend, and when the pressing force for pressing the suction plate against the adherend reaches a predetermined pressing force, Since the slip clutch is made to slip, a predetermined pressing force required for sticking is applied to the sticking object at the position where the advancement of the suction plate to the sticking object is stopped. As a result, it is possible to appropriately control the pressing force when attaching the label to the adherend, so that even for the soft and easily crushable adherend, it is possible to adhere the label neatly without being damaged. it can.

In this case, the slip clutch allows the predetermined pressing force to slip to be variable, so that it is possible to take a detailed measure in accordance with the degree of softness of the adherend.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a label sticking apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view showing the entire configuration of the label sticking apparatus according to the present invention. Note that the same members as those described in FIG. 3 are described with the same reference numerals.

As shown in FIG. 1, a label sticking apparatus 10
Are roughly divided into a supply / rewind section 12 and a sticking section 14 for the label 2.
Consists of The supply and take-up unit 12 mainly includes a supply reel 18 for feeding a band-shaped backing sheet 16 on which the label 2 is temporarily attached at a predetermined interval, and a supply reel 18 for transferring the label 2 from the band-backing sheet 16 to 1
A peeling plate 20 for peeling off the labels one by one, a take-up reel 22 for winding up the band-shaped base material 16 from which the label 2 has been peeled off, a take-up motor 24 for driving the take-up reel 22, and a controller 26 for controlling the take-up motor 24; Consists of Then, the band-shaped backing paper 16 to which the label 2 is temporarily attached is rewound from the supply reel 18 and is conveyed to the peeling plate 20 while engaging with the plurality of supply-side guide rollers 28 provided in the conveyance path. You. The exfoliation plate 20 has an acute-angled tip, and the label 2 having the rigidity greater than that of the exfoliation board 16 is turned by the reversing conveyance at the extremity of the exfoliation board 20. And is fed out in the direction of the sticking portion 14. On the other hand, the strip-shaped backing from which the label 2 has been peeled is wound up on the take-up reel 22 via a plurality of guide rollers 29 on the winding side.

The sticking section 14 is mainly composed of a suction plate 5 and an advance / retreat mechanism 36 for moving the suction plate 5 forward and backward with respect to the adherend 3. , A power transmission unit 34 and a slip clutch 50 provided in the power transmission unit 34. Power transmission unit 3
Reference numeral 4 denotes a driving pulley 38 connected to the motor shaft 32 of the motor 30, a driven pulley 40 disposed immediately below the driving pulley 38 at a predetermined interval to face the same, and a hook between the driving pulley 38 and the driven pulley 40. The passed endless timing belt 42, a pair of guides 44 erected vertically along the timing belt 42 and having a U-shaped cross section, and a concave rail plate 48 guided by the guides 44 to move up and down. The suction plate 5 is supported at the lower end of the rail plate 48.

As shown in FIG. 2, the guide 44, the rail plate 48, the timing belt 42, and the suction plate 5 have a pair of vertically erected guides 44, both ends of which are rotatable. A plurality of guide rollers 46 supported in the vertical direction are arranged in the vertical direction. Further, a rail plate 48 is disposed vertically in contact with the guide rollers 46 arranged on the pair of guides 44, and slides while engaging with the guides 44 on one side of the rail plate 48. A plate 49 is provided. The slide plate 49 is connected to the timing belt 42 via the arm 51. Accordingly, when the motor 30 rotates forward to rotate the timing belt 42 clockwise in FIG.
Rises while being guided by. When the motor 30 rotates in the reverse direction to rotate the timing belt 42 counterclockwise in FIG. 1, the suction plate 5 descends while being guided by the guide 44.

As shown in FIG. 1, a plate-shaped detection plate 54 is provided at the upper edge of the right side plate 48A of the recessed rail plate 48, and is located near the upper end of the guide 44. And the upper limit sensor 56 near the middle position,
And a lower limit sensor 58 are provided. As a result, the suction plate 5 is configured such that the detection plate 54 includes the upper limit sensor 56 and the lower limit sensor 5.
Since the suction plate 5 moves up and down during the detection, the upper-limit position A of the suction plate 5 and the lower-limit position B of the suction plate 5 are determined.

The slip clutch 50 is interposed between the drive pulley 38 and the motor shaft 32. As a result, while the suction plate 5 is moving down to the lower limit position,
When the pressing force exceeds a predetermined pressing force, that is, when the rotation of the motor 30 exceeds a predetermined torque, the slip clutch 50 slips and the motor shaft 32 idles. . The predetermined pressing force (slip torque) at which the slip clutch 50 slips is adjusted in advance by the user himself, and changes the degree of rotation of the motor shaft 32 around. However, the load torque is 0.1 to 2.5 kg
It is preferable to control within the range of f / cm. Further, in this case, the slip clutch 50 can make the predetermined pressing force at which the slip occurs variable, so that it is possible to perform a detailed response in accordance with the degree of softness of the adherend 3.

Further, the suction plate 5 is provided with a plurality of suction holes 52 and communicates with a vacuum device (not shown),
The label 2 peeled from 6 is suction-held with the pressure-sensitive adhesive face down by the suction action of a vacuum device. Next, the operation of the label sticking apparatus of the present invention configured as described above will be described. A strip-shaped backing sheet 16 on which a large number of labels 2 are temporarily attached at predetermined intervals is first fed from a supply reel 18, and is separated via a plurality of supply-side guide rollers 28, 28.
It is led to. At the tip of the peeling plate 20, the band-shaped backing sheet 16 is turned and conveyed, and the label 2 having a greater rigidity than the band-shaped backing sheet 16 is fed straight to the sticking section 14. The strip-shaped backing sheet 16 from which the label 2 has been peeled off has a plurality of guide rollers 29 on the winding side,
Are wound up on the take-up reel 22 via. on the other hand,
The label 2 peeled off from the band-shaped backing sheet 16 is sucked and held with the adhesive surface down on the lower surface of the suction plate 5 that has risen to the upper limit position A and stopped. Next, the motor 30 is operated to rotate the timing belt 42 in a counterclockwise direction, and the adhering plate 3 conveyed by the conveyor 60 and stopped is stopped.
Descend toward. Then, the suction plate 5 is attached to the adherend 3.
When the pressing torque applied between the suction plate 5 and the object 3 reaches a preset slip torque, the friction of the slip clutch 50 is automatically adjusted. Slip on the surface. Thereby, the lower limit position B
The suction plate 5 that descends toward the
The descent is stopped at the position where it comes into contact with (the position shown by the two-dot chain line in FIG. 1), and a predetermined pressing force required for sticking is applied to the object 3. Therefore, since the pressing force when the label 2 is adhered to the adherend 3 can be appropriately controlled, the label 2 can be neatly adhered to the adherend 3 which is soft and easily crushed without being damaged. can do.

Next, when the time during which the suction plate 5 is pressing the label 2 against the adherend 3 after a certain interval is timed up, the motor 30 operates to rotate the timing belt 42 clockwise. Then, the suction plate 5 is raised and the attachment of the label 2 is completed. When the suction plate 5 rises along the two guides 44 and reaches the upper limit position A, the detection plate 5
4 is detected by the upper limit sensor 56, and the suction plate 5 stops. The suction plate 5 stopped at the upper limit position A waits for the end of the next peeling of the label 2 while sucking air from the vacuum device.

By repeating the above-mentioned attaching operation, the labels 2 are sequentially attached to the adherend 3. Incidentally, as the advance / retreat mechanism 36 of the label sticking apparatus 10 of the present invention, a rack and pinion mechanism may be used instead of the timing belt 42 and the pulley. In this case, the rotation shaft of the pinion is connected to the motor, the slip clutch 50 is attached to the motor shaft 32, and the suction plate 5 is attached to the rack that meshes with the pinion. Then, by moving the rack up and down by the rotation of the pinion, the suction plate 5 moves forward and backward with respect to the adherend 3.

[0019]

As described above, according to the label sticking apparatus of the present invention, the slip clutch is provided in the power transmission section of the advance / retreat mechanism for moving the suction plate toward / from the adherend, and the label is adhered to the adherend. Since the pressing force at the time of wearing can be appropriately controlled, a label can be stuck neatly without being damaged even on a soft and easily crushed adherend.

Further, since a detection sensor and a spring are not required as in the prior art, the cost of the apparatus can be reduced. Furthermore, troublesome work such as adjustment of the spring pressure can be omitted, and the working efficiency can be greatly increased.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram illustrating an embodiment of a label sticking apparatus according to the present invention.

FIG. 2 is a perspective view illustrating details of an advance / retreat mechanism for explaining the embodiment of the label sticking apparatus of the present invention.

FIG. 3 is a diagram illustrating an embodiment of a conventional label sticking apparatus.

[Explanation of Signs] 2 ... Label 3 ... Attached object 5 ... Adsorption plate 10 ... Label attaching device 12 ... Supply / winding unit 14 ... Attaching unit 16 ... Strip-like backing sheet 18 ... Supply reel 20 ... Release plate 22 ... Rolling Take-up reel 30 ... Motor 32 ... Motor shaft 34 ... Power transmission unit 36 ... Advancing / retracting mechanism 38 ... Drive pulley 40 ... Driving pulley 42 ... Timing belt 44 ... Guide 48 ... Rail plate 50 ... Slip clutch

Claims (2)

[Claims] An adsorbing plate, on which a label is adsorbed, is advanced with respect to an object to be attached by an advance / retreat mechanism, and the adsorbing plate is pressed against the object to be adhered via the label, whereby the label is attached to the object. In the label attaching device to be attached, a slip clutch is provided in a power transmission unit of the advance / retreat mechanism,
A label sticking apparatus, wherein the slip clutch slips when a pressing force for pressing the suction plate against the object to be stuck reaches a predetermined pressing force. 2. The label sticking apparatus according to claim 1, wherein said predetermined pressing force at which said slip clutch slips is variable.